Power tools used in asbestos work should be equipped with what device to minimize release of asbestos fibers?

• A. HEPA-filtered local exhaust
• B. Water-only cooling
• C. Gas-powered drive
• D. Carbon filtration system

Answer: (A)

Controlling asbestos dust hinges on capturing fibers right at the source. A HEPA-filtered local exhaust attached to the power tool pulls dust-laden air into a collection system and passes it through a HEPA filter, which traps the fine asbestos fibers before they can disperse into the room. This dramatically reduces airborne concentration and keeps fibers contained in the system, protecting workers. HEPA filtration is capable of capturing very small particles, making it the most effective option for fiber control.

Water-only cooling can suppress dust during cutting but doesn’t remove fibers once they’re generated and may complicate disposal. A carbon filtration system targets gases and vapors, not solid asbestos fibers. A gas-powered drive is not relevant to dust control.